diff --git a/configure.ac b/configure.ac index c23c2888..2e187bbb 100644 --- a/configure.ac +++ b/configure.ac @@ -33,7 +33,11 @@ then fi # checking for Xlib, Xfixes -AC_CHECK_HEADERS([X11/Xlib.h X11/extensions/Xfixes.h], [], [AC_MSG_ERROR([please install libx11-dev and libxfixes-dev])]) +AC_CHECK_HEADERS([X11/Xlib.h X11/extensions/Xfixes.h], [], + [AC_MSG_ERROR([please install libx11-dev and libxfixes-dev])], + [[#ifdef HAVE_XLIB_H + #include + #endif]]) libdir="${libdir}/xrdp"; if test "x${prefix}" = "xNONE" ; then